Analog Signal Isolator, Loop/External Powered, 4-20mA

Name: Analog Signal Isolator, Loop/External Powered, 4-20mA
Brand: Such.com
SKU: SUCH-SINIR-502E
Price: 122.13 USD
Availability: InStock
Rating: 5.0 (1 reviews)

1 review(s) | Add your review

SKU: SUCH-SINIR-502E

$122.13

● Loop or external 24V DIP switch ● Plug-in design, no rewiring ● Only 18mm wide, DIN rail ● ≤0.2% annual stability

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Overview
Specs
Application
FAQ
Reviews

Overview

This analog signal isolator supports loop powered or external 24V supply. In loop mode, it acts as a loop powered isolator; external power enables passive isolator 4‑20mA. Accepts 4‑20mA, 0‑20mA, 0‑5V, 0‑10V inputs/outputs. Options: 1‑in‑1‑out, 1‑in‑2‑out, 2‑in‑2‑out. Accuracy 0.1% FS, drift ≤0.2%/yr. Load: current 350Ω, voltage ≥10kΩ. Features 1500VAC isolation, pluggable PCB, DIN rail (96×18×122mm). Ideal for PLC/DCS.

Feature

Power source: selectable loop or external power, functioning as a passive 4-20mA isolator to eliminate extra supplies and simplify wiring.
Accuracy & stability: 0.1% FS accuracy and ≤0.2%/year stability ensure drift-free transmission, critical for precise process control.
Modular design: pluggable PCB power board with separable isolating module permits exchange without rewiring, simplifying maintenance.
Signal compatibility: wide compatibility (4-20/0-20 mA and 0-5/0-10 V) lets one isolator cover multiple types, reducing spare parts.

Dimension (Unit: mm)

35mm DIN rail mounting – pluggable PCB power board with separable isolating circuit module

Wiring Diagram

Wiring diagram – loop powered (switch up) or external powered (switch down, DC 24V±10%)

Specs

Output Signal Type	4-20mA
	0-20mA
	0-5V
	0-10V
Output Signal Type (same range as input, but selectable independently)	4-20mA
	0-5V
	0-10V
Number of Input & Output Channels	1 input & 1 output
	1 input & 2 outputs
	2 inputs & 2 outputs
Power Supply Mode of Input Signal	Loop powered (switch up) or External powered (switch down)
Output Load (depends on selected Output Signal)	Current output: 0-350Ω
Output Load (depends on selected Output Signal)	Voltage output: ≥10kΩ
Accuracy	0.1% FS
Stability	≤0.2% / year
Power Supply	DC 24V ±10%
Structure	Pluggable PCB power board and separable isolating circuit module
Installation	35mm DIN rail
Dimension	96 × 18 × 122 mm
Shipping Weight	0.5 kg

Application

Oil and gas pipeline SCADA signal isolator field deployment

Oil & Gas Pipeline

Lithium Battery Production

Food packaging and logistics sorting signal isolator setup

Food Packaging & Sorting

FAQ

Q1:How do I switch between loop-powered and externally powered modes, given their key differences? ❯

A: Loop-powered mode: the input signal (4-20mA) powers the isolator – no extra wiring. Externally powered mode: requires a separate DC 24V supply. Switch via onboard DIP switch: up for loop-powered, down for externally powered. Adapts to different field wiring conditions.

Q2: What I/O signal types and channel configurations are available? ❯

A: Signal types: 4-20mA, 0-20mA, 0-5V, 0-10V. Three channel configs: 1-in-1-out, 1-in-2-out, 2-in-2-out. Choose as needed.

Q3: Given its output load capacity, can this unit directly drive a PLC or digital indicator? ❯

A: Current output load capacity: 0–350Ω. Voltage output load requirement: ≥10kΩ. Compatible with most PLC analog input modules and indicators. For driving multiple devices or long-distance transmission, ensure total load does not exceed 350Ω.

1 review(s)

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From: Thomas Griffin | Date: 8/12/2026 3:22 AM

analog signal isolator makes wiring easier

Bought this for a retrofit project where I needed to separate an existing sensor signal from the control side. The analog signal isolator fit the application nicely and helped avoid extra wiring changes. The setup took some checking because of different signal options, but the final connection was straightforward. A practical solution for industrial signal handling.

Analog Signal Isolator, Loop/External Powered, 4-20mA

Feature

Dimension (Unit: mm)

Wiring Diagram

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